Taxonomic review and evolutionary trends of Levipustulini and Absenticostini (Brachiopoda) from Argentina : palaeobiogeographic and palaeoclimatic implications

The diagnosis and composition of the brachiopod Tribe Levipustulini Lazarev, 1985 is reviewed, leading to a detailed revision of the genera Levipustula Maxwell, 1951 and Lanipustula Klets, 1983, as well as a review of previous records of the species Levipustula levis Maxwell from Australia and Argentina. The presence of Lanipustula patagoniensis Simanauskas in Patagonia is confirmed with additional topotypic material described and illustrated. Based on this review, we reassign Levipustula levis from New South Wales, Australia to Lanipustula. Two new species, Lanipustula kletsi from the middle Pennsylvanian of Patagonia and the Absenticostinin Absenticosta bruntoneileenae from the latest Viséan of western Argentina, are proposed. Abstenticosta bruntoneileenae is suggested as a possible ancestral stock of the Patagonian Levipustulini through the lineage Lanipustula-Verchojania-Jakutoproductus-Piatnitzkya (Serpukhovian-middle Artinskian). The development of similar phylogenetic lineages of Levipustulini in high latitude regions of both northern and southern hemispheres (such as Siberia in Northeast Asia and Patagonia in southwestern Gondwana) is here interpreted as a consequence of parallel evolution. The progressive palaeobiogeographic isolation of Patagonia from mainland South America, coupled with its southward drift under cold palaeoclimatic conditions during middle Carboniferous-earliest Permian times, is proposed to have triggered the Levipustulini vicariance

Yagonia Roberts (brachiopoda : chonetidina) from the malimán formation, lower carboniferous of western Argentina : palaeobiogeographical implications

A new anoplid chonetid species, Yagonia furquei sp. nov., is described from the Lower Carboniferous (late Tournaisian–early Viséan) Malimán Formation of western Argentina. The associated temperate ‘Malimanian’ fauna is suggested to indicate an initial biotic segregation that took place in western Gondwana (southwestern South America), a palaeobiogeographic event that predated the late Viséan global cooling and associated major palaeolatitudinal biotic differentiation. Occurrences of Yagonia are here interpreted as evidence of a ‘south to north’ faunal migration pathway, here named the Austropanthalassic–Rheic oceanic corridor, established in western Gondwana during the late Early Carboniferous

Cronoestratigrafía del Paleozoico Superior de América del Sur : Primera etapa de trabajo hacia una nueva propuesta

Fil: Azcuy, Carlos L.. Departamento de Geología. Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. CABA; ArgentinaFil: Beri, Ángeles. Sección Paleontología. Departamento de Geología. Facultad de Ciencias. Montevideo; UruguayFil: Bernardes-de-Oliveira, Mary E.C.. Universidade Guarulhos. SP; BrasilFil: Carrizo, Hugo A.. Fundación Miguel Lillo. Dirección de Geología. San Miguel de Tucumán; ArgentinaFil: di Pasquo, Mercedes. Departamento de Geología. Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. CABA; ArgentinaFil: Díaz Saravia, Pamela. Fil: González, Carlos R.. Fundación Miguel Lillo. Dirección de Geología. San Miguel de Tucumán; ArgentinaFil: Iannuzzi, Roberto. Instituto de Geociências. Universidad Federal Río Grande do Sul. Porto Alegre; BrasilFil: Lemos, Valesca B.. Instituto de Geociências. Universidad Federal Río Grande do Sul. Porto Alegre; BrasilFil: Melo, José Henrique G.. PETROBRAS/CENPES/PDEXP/BPA. Rio de Janeiro; BrasilFil: Pagani, María Alejandra. Museo Paleontológico Egidio Feruglio. Trelew. Chubut; ArgentinaFil: Rhon, Rosemarie. Departamento de Geologia Aplicada, IGCE/UNESP. Rio Claro; BrasilFil: Amenabar, Cecilia. Departamento de Geología. Facultad de Ciencias Exactas y Naturales. UBA. CABA; ArgentinaFil: Sabattini, Nora María. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Souza, Paulo. Instituto de Geociências. Universidad Federal Río Grande do Sul. Porto Alegre; BrasilFil: Taboada, Arturo C.. Laboratorio de Investigaciones en Evolución y Biodiversidad (LIEB). Facultad de Ciencias Naturales Sede Esquel. Universidad Nacional de La Patagonia San Juan Bosco. Chubut; ArgentinaFil: Vergel, María del Milagro. Fundación Miguel Lillo. Dirección de Geología. San Miguel de Tucumán; Argentin

Gastrópodes eopermianos da Formação Pampa de Tepuel no Valle de Tres Lagunas, Chubut, Argentina

Al registro fosilífero de Gastropoda del Grupo Tepuel, se suma una nueva faunula constituida por los Eotomariidae Glabrocingulum (Stenozone) heminodosus sp. nov. y Lagunaspira labrocostellata gen. et sp. nov., además del Euomphalidae Euomphalus tenuicarinatus sp. nov. La faunula se registra en el techo de la Formación Pampa de Tepuel en los afloramientos interserranos del Valle de Tres Lagunas de la Sierra de Tepuel en el centro-oeste de la provincia del Chubut, y su antigüedad ha sido estimada como asseliana tardía.We add a new faunula including the Eotomariidae Glabrocingulum (Stenozone) heminodosus sp. nov. and Lagunaspira labrocostellata gen. et sp. nov., as well as the Euomphalidae Euomphalus tenuicarinatus Pinilla and Taboada sp. nov., to the fossil record of Gastropoda in the Tepuel Group. This faunula was recorded from the top of the Pampa de Tepuel Formation at the Valle de Tres Lagunas of the Sierra de Tepuel in central-west Chubut province, and was estimated to be latest Asselian in age.Ao registro fossilífero de Gastropoda do Grupo Tepuel, soma-se uma nova fáunula composta por Eotomariidae Glabrocingulum (Stenozone) heminodosus sp. nov. e Lagunaspira labrocostellata gen. et sp. nov., além do Euomphalidae Euomphalus tenuicarinatus sp. nov. A fáunula é registrada no topo da Formação Pampa de Tepuel, nos afloramentos intermontanhosos do Vale de Tres Lagunas da Sierra de Tepuel, no centro-oeste da província de Chubut, e sua idade foi estimada como Asseliana tardia.Facultad de Ciencias Naturales y Muse

Brachiopods of the Itararé Group from Mafra county, southern Brazil, and their geological significance

Two remarkable brachiopod-bearing occurrences are recorded in the Late Paleozoic deposits of the Paraná Basin, cropping-out in the Mafra county, State of Santa Catarina, southern Brazil. These deposits belong to the upper-mid part of Itararé Group, known as Mafra and Lontras assemblages. The first one belong to the mid portion of the Mafra Formation, recorded in the Potreiro Farm outcrop. The second brachiopod occurrence is recorded in a 1.5-m-thick deposit of dark siliceous shales (Lontras shale), in which fossil remains are extremely abundant. Shells come from the Campáleo outcrop, located close to the BR-280 highway, 2km far from Mafra county. These shales are referred to the upper part of the Campo Mourão Formation. Until now, only two species of brachiopods were formally described or identified for these assemblages (i.e., Lingula imbituvensis Oliveira, Orbiculoidea guaraunensis Oliveira). Hence, the brachiopods faunas above are here described and/or revised, based on the available material deposited in the CENPALEO scientific collection (Contestado University). Preliminary results of our systematic survey indicated that both faunas are much diverse than previously realized. The Lontras shale brachiopod assemblage includes: Biconvexiella roxoi (Oliveira), Quinquenella? sp., Beecheria? sp., Langella imbituvensis (Oliveira), and Orbiculoidea guaraunensis Oliveira. On the other hand, the Mafra assemblage is composed by B. roxoi, Q. rionegrensis?, L. imbituvensis, and O. guaraunensis. Therefore, both assemblages show various taxa in common. It is noteworthy that the species L. imbituvensis, B. roxoi and Q. rionegrensis are also recorded in the upper part of the Taciba Formation, in Teixeira Soares region, State of Paraná. This is significant since: a- suggests a close faunal affinity among those brachiopodassemblages from distinct units of the Itararé Group; b- indicates that the stratigraphic range of those three above mentioned species is very wide, in which the oldest occurrence is recorded in the mid portion of the Mafra Formation and the youngest one in the uppermost portion of the Taciba Formation. Finally, both faunas are remarkable since they precede the record of the Eurydesma fauna, which thrived in the Paraná Basin, during the deposition of the Taciba Formation.Fil: Neves, Jacqueline. P.. Universidade Federal do Paraná; BrasilFil: Taboada, Arturo Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagónica. Universidad Nacional de la Patagonia "San Juan Bosco". Centro de Investigación Esquel de Montaña y Estepa Patagónica; ArgentinaFil: Weinschütz, Luis. C.. Universidade Federal do Paraná; BrasilFil: Simoes, Marcello G.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilXXV Congresso Brasileiro de PaleontologiaRiberao PretoBrasilSociedade Brasileira de Paleontologi

Poblamiento y desarrollo cultural en la cuenca de Vera durante la prehistoria reciente

Ejemplar dedicado a: Homenaje al profesor Manuel Fernández-Miranda / coord. por María Angeles Querol Fernández, María Teresa Chapa Brunet[ES] Se presentan en sintesis los resultados de la investigación realizada en la desembocadura del río Almanzora para intentar conseguír la reconstrucción del modelo de poblamiento y la evolución histórica de la zona durante la Prehistoria reciente. En esta tarea se utilizan, tanto los datos procedentes de las nuevas excavaciones del yacimiento calcolitico de Almizaraque realizadas entre 1980-1984, como de la prospección de su territorio próximo, así como la información de la documentación arqueológica de la colección Siret (materiales, notas y cuadernos de campo). La continuidad de poblamiento entre el Neolítico y Calcolítico, con una clara expansión en el segundo período, se ve cortada durante la Edad del Bronce donde se detecto un cambio en el modelo de ocupación expresada en la disminución del nunero de yacimientos y su ubicación en espacios diferentes.Peer reviewe

Effects of pre-operative isolation on postoperative pulmonary complications after elective surgery: an international prospective cohort study an international prospective cohort study

We aimed to determine the impact of pre-operative isolation on postoperative pulmonary complications after elective surgery during the global SARS-CoV-2 pandemic. We performed an international prospective cohort study including patients undergoing elective surgery in October 2020. Isolation was defined as the period before surgery during which patients did not leave their house or receive visitors from outside their household. The primary outcome was postoperative pulmonary complications, adjusted in multivariable models for measured confounders. Pre-defined sub-group analyses were performed for the primary outcome. A total of 96,454 patients from 114 countries were included and overall, 26,948 (27.9%) patients isolated before surgery. Postoperative pulmonary complications were recorded in 1947 (2.0%) patients of which 227 (11.7%) were associated with SARS-CoV-2 infection. Patients who isolated pre-operatively were older, had more respiratory comorbidities and were more commonly from areas of high SARS-CoV-2 incidence and high-income countries. Although the overall rates of postoperative pulmonary complications were similar in those that isolated and those that did not (2.1% vs 2.0%, respectively), isolation was associated with higher rates of postoperative pulmonary complications after adjustment (adjusted OR 1.20, 95%CI 1.05–1.36, p = 0.005). Sensitivity analyses revealed no further differences when patients were categorised by: pre-operative testing; use of COVID-19-free pathways; or community SARS-CoV-2 prevalence. The rate of postoperative pulmonary complications increased with periods of isolation longer than 3 days, with an OR (95%CI) at 4–7 days or ≥ 8 days of 1.25 (1.04–1.48), p = 0.015 and 1.31 (1.11–1.55), p = 0.001, respectively. Isolation before elective surgery might be associated with a small but clinically important increased risk of postoperative pulmonary complications. Longer periods of isolation showed no reduction in the risk of postoperative pulmonary complications. These findings have significant implications for global provision of elective surgical care. We aimed to determine the impact of pre-operative isolation on postoperative pulmonary complications after elective surgery during the global SARS-CoV-2 pandemic. We performed an international prospective cohort study including patients undergoing elective surgery in October 2020. Isolation was defined as the period before surgery during which patients did not leave their house or receive visitors from outside their household. The primary outcome was postoperative pulmonary complications, adjusted in multivariable models for measured confounders. Pre-defined sub-group analyses were performed for the primary outcome. A total of 96,454 patients from 114 countries were included and overall, 26,948 (27.9%) patients isolated before surgery. Postoperative pulmonary complications were recorded in 1947 (2.0%) patients of which 227 (11.7%) were associated with SARS-CoV-2 infection. Patients who isolated pre-operatively were older, had more respiratory comorbidities and were more commonly from areas of high SARS-CoV-2 incidence and high-income countries. Although the overall rates of postoperative pulmonary complications were similar in those that isolated and those that did not (2.1% vs 2.0%, respectively), isolation was associated with higher rates of postoperative pulmonary complications after adjustment (adjusted OR 1.20, 95%CI 1.05–1.36, p = 0.005). Sensitivity analyses revealed no further differences when patients were categorised by: pre-operative testing; use of COVID-19-free pathways; or community SARS-CoV-2 prevalence. The rate of postoperative pulmonary complications increased with periods of isolation longer than 3 days, with an OR (95%CI) at 4–7 days or ≥ 8 days of 1.25 (1.04–1.48), p = 0.015 and 1.31 (1.11–1.55), p = 0.001, respectively. Isolation before elective surgery might be associated with a small but clinically important increased risk of postoperative pulmonary complications. Longer periods of isolation showed no reduction in the risk of postoperative pulmonary complications. These findings have significant implications for global provision of elective surgical care